<template>
    <div class="app-container">
      <el-form label-width="120px">
        <el-form-item label="信息描述">
          <el-tag type="info">excel模版说明</el-tag>
          <el-tag>
            <i class="el-icon-download"/>
            <a :href="'https://laoyangzhixuewang01.oss-cn-beijing.aliyuncs.com/muban.xlsx'">点击下载模版</a>
          </el-tag>
        </el-form-item>
  
        <el-form-item label="选择Excel">
          <el-upload
            ref="upload"
            :auto-upload="false"
            :on-success="fileUploadSuccess"
            :on-error="fileUploadError"
            :disabled="importBtnDisabled"
            :limit="1"
            :action="BASE_API + '/eduservice/subject/addSubject'"
            name="file"
            accept="application/vnd.ms-excel"
          >
            <el-button slot="trigger" size="small" type="primary"
              >选取文件</el-button
            >
            <el-button
              :loading="loading"
              style="margin-left: 10px"
              size="small"
              type="success"
              @click="submitUpload"
              >上传到服务器</el-button
            >
          </el-upload>
        </el-form-item>
      </el-form>
    </div>
  </template>
  
  
  <script>
    export default {
      data() {
        return {
          BASE_API: process.env.BASE_API, // 接口API地址
          importBtnDisabled: false, // 按钮是否禁用,
          loading: false,
        };
      },

    methods: {
    //点击按钮上传文件到接口里面
    submitUpload() {
      this.importBtnDisabled = true;
      this.loading = true;
      // js: document.getElementById("upload").submit()
      this.$refs.upload.submit();
    },
    //上传成功
    fileUploadSuccess(response) {
        //提示信息
        this.loading = false;
        this.$message({
            type: "success",
            message: "添加课程分类成功",
        });
        //跳转课程分类列表
        //路由跳转
        this.$router.push({ path: "/subject/list" });
    },
    //上传失败
    fileUploadError() {
        this.loading = false;
        this.$message({
            type: "error",
            message: "添加课程分类失败",
        });
        },
    },
 } 
</script>
